一, Ukushicilelwa kwezinto zokupakisha eziguquguqukayo zokutya
①Indlela yoshicilelo
Ukupakishwa kokupakisha okuguquguqukayo kokutya kukuprintwa kwegravure kunye noshicilelo lwe-flexographic, kulandelwa kukusetyenziswa komatshini wokushicilela we-flexographic ukuprinta ifilimu yeplastiki (umatshini wokushicilela we-flexographic kunye nomatshini odibeneyo owomileyo wenza umgca wemveliso), kodwa kukho iiyantlukwano ezininzi xa kuthelekiswa noshicilelo lwegravure jikelele kunye ushicilelo lwe-flexographic olusetyenziselwa ukupapasha kunye noshicilelo lwempahla. Ngokomzekelo, ukuprintwa kokupakishwa okuguquguqukayo kuqhutyelwa kumphezulu we-substrate emise okwe-roll. Ukuba ifilimu ecacileyo, iphethini ingabonwa ngasemva, kwaye ngamanye amaxesha uluhlu lwepeyinti emhlophe kufuneka luprintwe, okanye inkqubo yokushicilela yangaphakathi isetyenziswe.
②Inkcazo yenkqubo yoshicilelo lwangaphakathi
Ushicilelo lwangaphakathi lubhekisa kwindlela ekhethekileyo yoshicilelo esebenzisa ipleyiti yoshicilelo yomfanekiso ongemva ukuhambisa i-inki kwicala langaphakathi lesixhobo soshicilelo esiselubala, ukuze kuboniswe umfanekiso ovumayo phambi kwento eprintiweyo.
③Izinto eziluncedo eIndiya
Xa kuthelekiswa neemveliso eziprintiweyo ezingaphezulu, iimveliso eziprintiweyo zangaphakathi zineenzuzo zokukhanya kunye nobuhle, umbala oqaqambileyo / ukukhawuleza, umswakama kunye nokumelana nokugqoka; Emva kokushicilelwa kwangaphakathi, i-inki layer ifakwe phakathi kweengqimba ezimbini zefilimu, ezingayi kungcolisa ukupakishwa.
二, Ukuhlanganiswa kwezinto zokupakisha eziguquguqukayo zokutya
①Indlela edibeneyo emanzi
Uluhlu lwe-adhesive enyibilikayo emanzini lufakwe phezu kwezinto ezisisiseko (ifilimu yeplastiki, i-aluminium foil), edityaniswe nezinye izinto (iphepha, i-cellophane) ngokusebenzisa i-roller yoxinzelelo, kwaye yomiswe kwifilimu edibeneyo ngokutshisa. ukomisa umjelo. Le ndlela isetyenziselwa ukupakisha ukutya okomileyo.
②Indlela yokudibanisa eyomileyo
Okokuqala, gcoba ngokulinganayo i-adhesive-based adhesive kwi-substrate, uze uyithumele kumjelo oshushu wokomisa ukwenza i-solvent iguquke ngokupheleleyo, kwaye ngoko nangoko udibanise kunye nomnye umaleko wefilimu. Ngokomzekelo, ifilimu ye-polypropylene eyoluliweyo (i-OPP) ngokuqhelekileyo idityaniswe nezinye izinto ngenkqubo edibeneyo eyomileyo emva kokushicilelwa kwangaphakathi. Isakhiwo esiqhelekileyo yile: ifilimu ye-polypropylene ejoliswe kwi-biaxially (BOPP, i-12μ m) Ifoyile yeAluminiyam (AIU, 9μ m) Kwaye ifilimu ye-polypropylene eyoluliweyo ngokungafaniyo (CPP, 70μ m).Inkqubo yokwaleka ngokulinganayo uhlobo lokunyibilikisa "umgubo oncamathelayo owomileyo" kwisiseko sezinto kunye nesixhobo sokwaleka, emva koko usithumele kumjelo wokomisa oshushu ukuze uvuthulule ngokupheleleyo isinyibilikisi, uze usidibanise ngomnye umaleko wefilimu. irola edibeneyo.
③Indlela ye-Extrusion compound
I-polyethylene etyhidiweyo efana nomkhusane ekhutshwe kwi-slit ye-mold ye-T ixinzelelwe yi-clamping roller kwaye ifakwe ephepheni okanye ifilimu yokugquma i-polyethylene, okanye ezinye iifilimu zibonelelwa ukusuka kwinxalenye yesibini yokutya, kwaye i-polyethylene iboshwe njenge umaleko wokudibanisa.
④Indlela edibeneyo edibeneyo yokunyibilika
I-Polyethylene-acrylate copolymer, i-vinyl acid-ethylene copolymer kunye neparafini ziyafudunyezwa kwaye zinyibilike kunye, emva koko zigqunywe kwizinto ezisisiseko, zihlanganiswe ngokukhawuleza kunye nezinye izinto ezidibeneyo kwaye zipholile.
⑤Indlela ehlanganisiweyo ye-multi-layer extrusion
Iintlobo ngeentlobo zeerasi zeplastiki ezineempawu ezahlukileyo zicinezelwe kwi-mold ngokusebenzisa ii-extruders ezininzi ukwenza ifilimu edibeneyo. Le nkqubo ayisebenzisi i-adhesives kunye ne-solvents eziphilayo phakathi kweengqimba. Ifilimu ayinayo iphunga elikhethekileyo kwaye akukho kungena kwe-solvent eyingozi. Ilungele ukupakishwa kokutya kunye nobomi obude beshelufu. Umzekelo, ulwakhiwo ngokubanzi LLDPE/PP/LLDPE lunokungafihli kakuhle, kwaye ubukhulu buyi-50-60.μ m. Ukuba ubomi beshelufu bude, kuyimfuneko ukusebenzisa ifilimu engaphezulu kwesihlanu ye-barrier high barrier co-extruded film, kunye ne-middle barrier material yi-PA, PET kunye ne-EVOH.
Ixesha lokuposa: Mar-07-2023
